18281-04-4 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 18281-04-4 |
| Product name | 18281-04-4 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeCosmetic GradeFood Grade |
| Packaging | 25KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for 18281-04-4
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 18281-04-4 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 18281-04-4
| Industry | Application | Process |
|---|---|---|
| Chemicals | Raw material for synthetic lubricant production | Esterification to produce high-performance lubricants |
| Pharmaceuticals | Used in the preparation of drug carriers or excipients | Precise synthesis to produce pharmaceutical excipients |
| Cosmetics | Moisturizing ingredient in skin care products | High-purity purification followed by incorporation into skin care formulations |
| Agriculture | Adjuvant or synergist in pesticide formulations | Blending process to enhance pesticide stability and dispersibility |
| Materials | Additive for modifying polymeric materials | Grafting or blending to enhance material performance |
Manufacturing Quality Control of 18281-04-4
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies nineteen acid ethyl ester peak area relative to internal/external standard using calibrated response factors. |
| Water Content | Karl Fischer Titration | Measures water via coulometric or volumetric titration with iodine-based reagent reacting stoichiometrically with water. |
| Acid Value | Acid-Base Titration (NaOH in ethanol) | Determines free carboxylic acid impurities by titration with standardized sodium hydroxide solution. |
| Color | APHA Color Scale (Visual or Spectrophotometric) | Compares sample color to platinum-cobalt standards using visual matching or absorbance at 455 nm. |
| Density at 20 C | Digital Density Meter (Oscillating U-tube) | Measures mass per unit volume based on resonant frequency shift of a vibrating U-shaped tube filled with sample. |
| Refractive Index at 20 C | Refractometry (Abbe refractometer) | Determines refractive index by measuring critical angle of total internal reflection at prism-sample interface. |
| Residue on Evaporation | Gravimetric Analysis | Weighs non-volatile residue after controlled evaporation of specified sample amount under defined temperature and vacuum. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals after wet digestion by measuring atomic absorption of ground-state metal atoms in flame or graphite furnace. |
| Sulfated Ash | Gravimetric Analysis | Measures inorganic residue after charring, sulfuric acid treatment, and high-temperature incineration to constant weight. |
| Non-Volatile Matter | Gravimetric Analysis | Determines residue weight after drying sample under vacuum at elevated temperature to remove volatile components. |
| Odor | Sensory Evaluation | Assesses presence and intensity of off-odor by trained personnel under standardized conditions. |
| Appearance | Visual Inspection | Evaluates clarity and absence of suspended particles or phase separation in a clear glass container under controlled lighting. |
Technical Specifications of 18281-04-4
| Test Item | Specification |
|---|---|
| Appearance | White or colorless to light yellow powder or lumps |
| Purity | >=98.5% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Melting Point | 48–52°C |
| Refractive Index (n20/D) | 1.435–1.445 |
| Odor | Characteristic ester-like odor |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of 18281-04-4
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 18281-04-4
Packaging of 18281-04-4
Industrial 18281-04-4 Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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